The Case of the Sausalito Sunrise - S9-E19
Other mistake: The owner of a Los Angeles trucking company tells a driver who is going to San Francisco, "Take the San Diego Freeway toward Bakersfield." That freeway runs from San Diego to San Fernando. It does not go toward Bakersfield.
Other mistake: As the 2 buffaloes are walking out of the scene at the top of the hill Charlie says to Clyde that 'it's either gonna be her or me' but as both buffaloes' bellies are exposed in the same shot, it's clear that both buffaloes are males, or bulls.